Yellowstone. No words (or photos) can do this justice. Endless wildlife (confession, the wolves & bears are in a centre), bison, elk, deer & more. And the thermals. Breathtaking! Old Faithful sending water 80–100 feet. Boiling water & mud. Over 10,000 thermal features. Certain organisms live in different temperatures so as the water cools, the bacteria change colours. And, in the sunlight they glow. Beautiful. This is one of the most beautiful places you will ever see.